Fuel

Question 1

How many pumps in each tank and do they share a power source?

Answer 1

Two per tank

Separate power sources

Question 2

Why do Center tank fuel pumps cut of below 50% N1?

Answer 2

They are twice the pressure and draw a higher electrical load than the ones in the wing tanks

Question 3

Where will fuel from the center tanks migrate to?
757-
767-

Answer 3

757- to the left main tank

767- to the both tanks

Question 4

Fuel temp is measured from the side that it is added to the plane. which is:
757-
767-

Answer 4

757-right side

767-left side

Question 5

Fuel Config Annunciator for-

___ in center tanks without pumps on

Answer 5

1200lbs

Question 6

Fuel Config Annunciator for-

___ imbalance between wings on 757

Answer 6

1800 lb on 757

Question 7

Fuel Config Annunciator for-

___ imbalance between wings on 767

Answer 7

2000 lb on 767

Question 8

Fuel Config Annunciator for-

If any main tank is below ___

Answer 8

2200 lbs

Question 9

How fast will the 767 jettison fuel?

Answer 9

2600 lbs/min

Question 10

How much fuel does the APU burn/hr?

Answer 10

250 lbs/hr

Question 11

What is automatically does on the 767 when jettisoning fuel?

Answer 11

E+E goes into override and two windshield heats are deactivated for load shedding.

Question 12

When the fuel door is open __ is inhibited

Answer 12

HF Transmit

Question 13

Fuel Totalizer vs Calculated Fuel

-Which is subject to fluctuations in temp?

Answer 13

Totalizer

Question 14

How is Calculated Fuel generated and is it more or less reliable?

Answer 14

It takes a snapshot of the fuel in the tanks at engine start and then calculates based on fuel flow. Is usually more accurate because not subject to temp changes